Lathe.



No. 650,2lzx.` Patented may 22, leno.

M. A. AcKLEs.

,LATHE.

(Appximion mea Aug. s, 1599.)

(No Model.)

.+1 INVENTR ATTORNEY UNITED STATES* PATENT @Frida MoR'rIMER A. AoKLEs, 0F sKANEATELEs, NEW YORK.

LATHE.

SPECIFICATION forming para of Letters Patent No. 650,213, dated May 22, 1900.

Application tiled August 5, 1899.'

To @ZZ whom t may concern.: Be it known that I, MORTIMER A. ACKLES,

a citizen of the United States, and a resident curately guiding the tool-post longitudinallyV on the lathe and which guide shall bereadily adjustable to carry the tool-post in lines at different angles in relation to the axis of the lathe-spindles, as may be required for turning different tapers on the work carried between said spindles; and the object, furthermore, is to provide proper means for moving the tool-post on the llongitudinal guide `disposed at various angles in relation to the axis of the lathe-spindles; and to that end the invention consists in the novel arrangement and construction of the component parts of the lathe attachment, as hereinafter fully described, and set forth in the claims. v

In the accompanying drawings, Figure lis a side View of a lathe embodying my invention. Fig. 2 is a plan View of the same. Fig. 3 is an enlarged vertical longitudinal section on line X X, and Fig. et is a vertical transverse section on line Y Y in Fig. 2.

Similar letters of reference indicate corresponding parts.

A represents the bed or supporting-frame of the lathe. B denotes the head-stock,which carries the live-spindle a in the usual manner. C denotes the tail-stock, to which the dead-spindle b is adj ustably secured, and D represents the tool-post. All of said parts may be of any suitable and well-known con! struction.

My invention resides in the following Aattachments, to wit: To the lbed A is firmly secured a supplemental bed c, which may also be fastened to either the head-stock B or the tail-stock C, or both. To the top of this supplemental bed c, adjacent to the head-stock B, as shown at c', is pivoted a guidearm-d,

Serial No. 726,229. (No modela) lwhich is movable in a horizontal plane and ycan be turned on its pivot, so as to lie at different angles in relation to the axis of the live and dead spindles. By means of a clamp- Vscrew u, connected to the arm d and passing nutf, which is rigidly attached to or formed integral with the base e and has its eye axi- `ally parallel with the arm d. In a hub g,

formed on the arm d near the pivot c', is

journaled the feed-screw'h, which works inV the eye of the nut f. By means of collars t on the screw at opposite sides of the hub g said screw is prevented from traveling'longitudinally. In a bearing on a stationary post Zis journaled a horizontal shaft n, which is coupled to the feed-screw h by a universal joint o, disposed with the axes of the joint in line with the pivot c', so as to allow the arm d to be swung on its pivot into different positions in relation to the axis of the live and dead spindles without straining the connection of the screw with the shaft n. To this shaft is fastened a gear-wheel p, which by means of an intermediate pinion r, derives motion from a pinion or gear s, fastened to the live-spindle a. The feed-screw 72, is thus driven by the live-spindle, and the tool-post is` shifted automatically and gradually lengthwise of the supporting-arm 0l. This arm having been adjusted to lie in a line parallel with the taper to be turned on the work held between the live and dead spindles causes the longitudinally-traveling tool-post, with the tool fastened thereto, to accurately cut the taper on the work.

In order to permit the tool-post to be rapidly and conveniently moved back to its starting-point, I mount the intermediate pinion r on an arm t, which is loosely mounted on the onto the outer'ernd of the shaft 'n to turn the latter by hand in a direction whichv causes the tool-post to be moved back to its startingpoint. l

What I claim is- 1. The combination with the lathe-bed and the live and dead spindles, of alongitudinal guide-arm pivoted at one en d tothe bed at the side of the head-stock, means for confining said arm in its adjusted position, the tool-post sliding longitudinally on said guidearm andprovidedwith a n ut disposed axially parallel with said arm, a feed-screw journaled on said arm` and Working in the aforesaid` nut, means sustaining said screw stationary endyvise, a shaft coupled to said screw by a Vuniversal joint disposed directly over the pivotof the guide-arm, and mechanism transmitting motion from the live-spindle to the aforesaid shaftas set forth.

2. The combination with the lathe-bed and the live and dead spindles, of a supplemental bed mounted stationary on the lathe-.bed and provided With a transverseslot,l a longitudinal guide-armpivoted at one end to the supplemental bed` atjthe side of the head-stock, a clamp-screw passing through the aforesaid slot and confining the guide-armin its adjusted position, the tool-post sliding on said guide-arm and provided with a nut disposed axially parallel with said arm, ay feed-screw jour-naled on the guide-arm and Working in the-aforesaid nut, and provided with meansV to sustain d the Esame stationary endwise, a'

shaft coupled to said screw by a universal J'Ont disposed directly over the pivot of the guide-arm, gears secured respectively to said shaft and to the live-spindle, an intermediate pinion supported movable to and from engagem'ent with the aforesaid gears, and means for turning the aforesaid shaft independent of the gears as set forth.

3. The combination with the lathe-bed and the live and dead spindles, of a supplemental bed mounted stationary on the lathe-bed, and provided with a segmental lslot disposed transversely thereof, a longitudinal arm pivoted at one end to the supplemental bed lat the side of the head-stock, and provided on its top with longitudinal guides and a longitudinal groove between said guides, a'hub formed on said arm near its pivot, a clamp-screw passing through said slot and confining saidarm in its adjusted position, the tool-post sliding on the aforesaid guides and formed with a nut disposed in said groove, a feed-screw journaled in the aforesaid hub andworking in said nut, .collars provided on said feed-screw at opposite sides of the hub to prevent the screw from traveling longitudinally, a shaft coupled to said screw by a universal joint disposed directly over the pivot of the, guidearrn, and mechanism transmitting motion from the live-spindle to said shaft as set forth;

MORTIMER A. ACKLES. [L s] Witnesses:

H. B. SMITH, J J. LAAss. 

